Total Commander - A Shareware file manager for Windows® 95/98/ME/NT/2000/XP/Vista/7, and Windows® 3.1.
ncdu - A disk usage analyzer with an ncurses interface, aimed to be run on a remote server where you...
Double Commander - Double Commander is a cross-platform open source file manager with two panels side by side.
Baobab Disk Usage Analyzer - Baobab Disk Usage Analyzer is one of the light-weight disk analyzers that offers you a chance to view and monitor the disk usage & folder structure without any hassle.
XYplorer - File Manager for Windows
K4DirStat - K4DirStat is the successor of former KDirStat.